package com.itheima.controller;

public class Singleton {
    private static Singleton singleton = new Singleton();
    public static int counter1;
    public static int counter2 = 0;
    private Singleton(){
        counter1 ++;
        counter2 ++;
    }
    public static Singleton getInstance(){
        return singleton;
    }
}

class JVMTest {
    public static void main(String[] args){
        Singleton singleton = Singleton.getInstance();
        System.out.println("counter1 = " + singleton.counter1);
        System.out.println("counter2 = " + singleton.counter2);
    }
}
